Versatility in a compact design

Welcome to a new era: the new testo 440 combines a compact hand-held measuring instrument with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. Use it to keep all your air conditioning and ventilation measurements safely and reliably under control.

  • Intuitive measurement menus
    Clearly structured menus for volume flow, K factor, degree of turbulence, heating/cooling output, mould detection and long-term measurement are programmed into the instrument.
  • Wireless convenience
    All the testo 440 probes are also available as wireless Bluetooth versions.
    This makes for less cable clutter in the measuring case.
  • Clear display
    Measurement configuration and display of readings and measurement results at a glance.
  • Particularly cost-effective
    Save money when using the testo 440: the measuring instrument does not need to be calibrated, it measures all air velocity & IAQ parameters and the probes can be flexibly extended.

The measuring instrument for any air conditioning application

The menus programmed into the instrument guide you efficiently through volume flow measurements in ducts and at outlets, K factor and Pitot tube measurements.

All probes for the testo 440

Which probe for which application? Download probe comparison now and find out all about the testo 440 portfolio of probes.

The comprehensive testo 440 brochure

A wealth of product knowledge relating to the testo 440:

  • All probes and accessories
  • Special kits for any application
  • Details on the intuitive measurement menus

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